mirror of
https://github.com/mysensors/MySensors.git
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8f58b18e1a
* Added support for I2C EEPROM OTA * EEPROM OTA now uses extEEPROM as driver * Compiler warning fix * Style check fixes * Fix doxygen warnings of I2CEeprom * Use bool instead of boolean in I2CEeprom shim * Fix re-merged style problem
82 lines
2.2 KiB
C++
82 lines
2.2 KiB
C++
// Copyright (C) 2016 Krister W. <kisse66@hobbylabs.org>
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//
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// Original SPI flash driver this is based on:
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// Copyright (c) 2013-2015 by Felix Rusu, LowPowerLab.com
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// **********************************************************************************
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// License
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// **********************************************************************************
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// This program is free software; you can redistribute it
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// and/or modify it under the terms of the GNU General
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// Public License as published by the Free Software
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// Foundation; either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will
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// be useful, but WITHOUT ANY WARRANTY; without even the
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// implied warranty of MERCHANTABILITY or FITNESS FOR A
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// PARTICULAR PURPOSE. See the GNU General Public
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// License for more details.
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//
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// You should have received a copy of the GNU General
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// Public License along with this program.
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// If not, see <http://www.gnu.org/licenses/>.
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//
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// Licence can be viewed at
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// http://www.gnu.org/licenses/gpl-3.0.txt
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//
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// Please maintain this license information along with authorship
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// and copyright notices in any redistribution of this code
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#include <Wire.h>
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#include "I2CEeprom.h"
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I2CEeprom::I2CEeprom(uint8_t addr) : extEEPROM(I2CEEPROM_CHIP_SIZE, 1, I2CEEPROM_PAGE_SIZE)
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{
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m_addr = addr; // we only need this for busy()
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}
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/// setup
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bool I2CEeprom::initialize()
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{
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return extEEPROM::begin(I2CEEPROM_TWI_CLK) ? false : true;
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}
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/// read 1 byte
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uint8_t I2CEeprom::readByte(uint32_t addr)
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{
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uint8_t val;
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readBytes(addr, &val, 1);
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return val;
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}
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/// read multiple bytes
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void I2CEeprom::readBytes(uint32_t addr, void* buf, uint16_t len)
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{
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extEEPROM::read((unsigned long)addr, (byte *)buf, (unsigned int) len);
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}
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/// check if the chip is busy
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bool I2CEeprom::busy()
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{
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Wire.beginTransmission(m_addr);
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Wire.write(0);
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Wire.write(0);
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if (Wire.endTransmission() == 0) {
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return false;
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} else {
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return true; // busy
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}
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}
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/// Write 1 byte
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void I2CEeprom::writeByte(uint32_t addr, uint8_t byt)
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{
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writeBytes(addr, &byt, 1);
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}
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/// write multiple bytes
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void I2CEeprom::writeBytes(uint32_t addr, const void* buf, uint16_t len)
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{
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extEEPROM::write((unsigned long) addr, (byte *)buf, (unsigned int) len);
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}
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